Presentation
Recurrent attacks of right hip pain.
Patient Data
Age: 55 years
Gender: Male
From the case:
Transient hip osteoporosis
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Axial T1
Abnormal signal intensity involving the right femoral head and neck displays low T1 and bright STIR signal with no structural collapse or subchondral fracture. Mild joint effusion is noted.
Diagnosis: Transient hip osteoporosis.
Case Discussion
Features consistent with transient hip osteoporosis.
Differential diagnosis includes avascular necrosis of the femoral head, which includes also subchondral abnormal signal or structural deformity. The hypothesis that transient hip osteoporosis represents an early reversible stage of AVN is controversial.
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